Home / 74,239.69-111,347.70-21,636.88

Finding the Fourth Proportional to 74,239.69, 111,347.70 and 21,636.88

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Solution

The fourth proportional to 74,239.69, 111,347.70 and 21,636.88 is: 32,451.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,239.69 : 111,347.70 = 21,636.88 : x
  2. Step 2: Convert to fraction form
    74,239.69/111,347.70 = 21,636.88/x
  3. Step 3: Cross multiply
    74,239.69x = 111,347.70 × 21,636.88
  4. Step 4: Simplify right side
    74,239.69x = 2,409,216,823.18
  5. Step 5: Solve for x
    x = 2,409,216,823.18/74,239.69
  6. Step 6: Final answer
    x = 32,451.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.